It is an High Yield Investment Program. They advertise 600% in one day. If that would be true, everybody would be happy.

Simple calculation may reveal that with US $100 and 600% in one day, one would make in 24 hours US $600, and in 48 hours US $3600 and in 72 hours US $21,600 and one day later US $129,600 and just one day later US $777,600 and they would have in one week about US $4,665,600 -- which means they would never require more investment but US $100 -- and would not need to invite anybody.